Isuzu Repair: shutter, isuzu pup, clutch plate

Question
I own an 87 isuzu pup 1.9L 4 speed.  It set several years before I purchased it.  When the weather is cool or you are first starting out it wants to shutter when the clutch is released into first gear.  It only does it on first, not thru the upshift.  It seems worse when the weather is cold.  Could it sitting for seveal years have done something to the clutch plate?  What is your first guess and what should be replaced or repaired?  Thanks for the help.

Answer
Well the brake fluid could be contaminated. Or the clutch is not releasing all the way Landon. I would check all shift linkage/s and see what you find. Since it set for so long I would check the fluid out as well as there could be water, debris or a leak in your system. Are you sure it isn't a choke problem though?